“…It is known to be an efficient catalyst for the decomposition of waste gas, oxidation of methane and carbon monoxide, selective reduction of nitrobenzene and oxydehydrogenation of alcohols [5]. It also has various potential applications in diverse areas, including rechargeable lithium ion batteries, molecular adsorption, electrochemistry and magnetic [6][7][8]. In the last decade, the different shapes and sizes of Mn 3 O 4 nanocrystals have been synthesized via various techniques [6][7][8][9][10][11].…”